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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2008 Blender Foundation.
* All rights reserved.
*
*
* Contributor(s): Blender Foundation, Nathan Letwory
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/space_node/node_view.c
* \ingroup spnode
*/
#include <stdio.h>
#include "DNA_node_types.h"
#include "DNA_scene_types.h"
#include "BLI_rect.h"
#include "BLI_utildefines.h"
#include "BKE_context.h"
#include "BKE_node.h"
#include "BKE_image.h"
#include "BKE_screen.h"
#include "ED_node.h" /* own include */
#include "ED_screen.h"
#include "ED_space_api.h"
#include "ED_image.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "WM_api.h"
#include "WM_types.h"
#include "UI_view2d.h"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "MEM_guardedalloc.h"
#include "node_intern.h" /* own include */
/* **************** View All Operator ************** */
static void snode_home(ScrArea *UNUSED(sa), ARegion *ar, SpaceNode* snode)
{
bNode *node;
rctf *cur;
float oldwidth, oldheight, width, height;
int first= 1;
cur= &ar->v2d.cur;
oldwidth= cur->xmax - cur->xmin;
oldheight= cur->ymax - cur->ymin;
cur->xmin = cur->ymin = 0.0f;
cur->xmax=ar->winx;
cur->ymax=ar->winy;
if (snode->edittree) {
for (node= snode->edittree->nodes.first; node; node= node->next) {
if (first) {
first= 0;
ar->v2d.cur= node->totr;
}
else {
BLI_rctf_union(cur, &node->totr);
}
}
}
snode->xof= 0;
snode->yof= 0;
width= cur->xmax - cur->xmin;
height= cur->ymax- cur->ymin;
if (width > height) {
float newheight;
newheight= oldheight * width/oldwidth;
cur->ymin = cur->ymin - newheight/4;
cur->ymax = cur->ymax + newheight/4;
}
else {
float newwidth;
newwidth= oldwidth * height/oldheight;
cur->xmin = cur->xmin - newwidth/4;
cur->xmax = cur->xmax + newwidth/4;
}
ar->v2d.tot= ar->v2d.cur;
UI_view2d_curRect_validate(&ar->v2d);
}
static int node_view_all_exec(bContext *C, wmOperator *UNUSED(op))
{
ScrArea *sa= CTX_wm_area(C);
ARegion *ar= CTX_wm_region(C);
SpaceNode *snode= CTX_wm_space_node(C);
snode_home(sa, ar, snode);
ED_region_tag_redraw(ar);
return OPERATOR_FINISHED;
}
void NODE_OT_view_all(wmOperatorType *ot)
{
/* identifiers */
ot->name = "View All";
ot->idname = "NODE_OT_view_all";
ot->description = "Resize view so you can see all nodes";
/* api callbacks */
ot->exec = node_view_all_exec;
ot->poll = ED_operator_node_active;
/* flags */
ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
}
/* **************** Backround Image Operators ************** */
typedef struct NodeViewMove {
int mvalo[2];
int xmin, ymin, xmax, ymax;
} NodeViewMove;
static int snode_bg_viewmove_modal(bContext *C, wmOperator *op, wmEvent *event)
{
SpaceNode *snode = CTX_wm_space_node(C);
ARegion *ar = CTX_wm_region(C);
NodeViewMove *nvm = op->customdata;
switch (event->type) {
case MOUSEMOVE:
snode->xof -= (nvm->mvalo[0] - event->mval[0]);
snode->yof -= (nvm->mvalo[1] - event->mval[1]);
nvm->mvalo[0] = event->mval[0];
nvm->mvalo[1] = event->mval[1];
/* prevent dragging image outside of the window and losing it! */
CLAMP(snode->xof, nvm->xmin, nvm->xmax);
CLAMP(snode->yof, nvm->ymin, nvm->ymax);
ED_region_tag_redraw(ar);
break;
case LEFTMOUSE:
case MIDDLEMOUSE:
case RIGHTMOUSE:
MEM_freeN(nvm);
op->customdata = NULL;
return OPERATOR_FINISHED;
}
return OPERATOR_RUNNING_MODAL;
}
static int snode_bg_viewmove_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
SpaceNode *snode = CTX_wm_space_node(C);
ARegion *ar = CTX_wm_region(C);
NodeViewMove *nvm;
Image *ima;
ImBuf *ibuf;
const float pad = 32.0f; /* better be bigger then scrollbars */
void *lock;
ima = BKE_image_verify_viewer(IMA_TYPE_COMPOSITE, "Viewer Node");
ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
if (ibuf == NULL) {
BKE_image_release_ibuf(ima, lock);
return OPERATOR_CANCELLED;
}
nvm = MEM_callocN(sizeof(NodeViewMove), "NodeViewMove struct");
op->customdata = nvm;
nvm->mvalo[0] = event->mval[0];
nvm->mvalo[1] = event->mval[1];
nvm->xmin = -(ar->winx / 2) - (ibuf->x * (0.5f * snode->zoom)) + pad;
nvm->xmax = (ar->winx / 2) + (ibuf->x * (0.5f * snode->zoom)) - pad;
nvm->ymin = -(ar->winy / 2) - (ibuf->y * (0.5f * snode->zoom)) + pad;
nvm->ymax = (ar->winy / 2) + (ibuf->y * (0.5f * snode->zoom)) - pad;
BKE_image_release_ibuf(ima, lock);
/* add modal handler */
WM_event_add_modal_handler(C, op);
return OPERATOR_RUNNING_MODAL;
}
static int snode_bg_viewmove_cancel(bContext *UNUSED(C), wmOperator *op)
{
MEM_freeN(op->customdata);
op->customdata = NULL;
return OPERATOR_CANCELLED;
}
void NODE_OT_backimage_move(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Background Image Move";
ot->description = "Move Node backdrop";
ot->idname = "NODE_OT_backimage_move";
/* api callbacks */
ot->invoke = snode_bg_viewmove_invoke;
ot->modal = snode_bg_viewmove_modal;
ot->poll = composite_node_active;
ot->cancel = snode_bg_viewmove_cancel;
/* flags */
ot->flag = OPTYPE_BLOCKING | OPTYPE_GRAB_POINTER;
}
static int backimage_zoom(bContext *C, wmOperator *op)
{
SpaceNode *snode = CTX_wm_space_node(C);
ARegion *ar = CTX_wm_region(C);
float fac = RNA_float_get(op->ptr, "factor");
snode->zoom *= fac;
ED_region_tag_redraw(ar);
return OPERATOR_FINISHED;
}
void NODE_OT_backimage_zoom(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Background Image Zoom";
ot->idname = "NODE_OT_backimage_zoom";
ot->description = "Zoom in/out the background image";
/* api callbacks */
ot->exec = backimage_zoom;
ot->poll = composite_node_active;
/* flags */
ot->flag = OPTYPE_BLOCKING;
/* internal */
RNA_def_float(ot->srna, "factor", 1.2f, 0.0f, 10.0f, "Factor", "", 0.0f, 10.0f);
}
/******************** sample backdrop operator ********************/
typedef struct ImageSampleInfo {
ARegionType *art;
void *draw_handle;
int x, y;
int channels;
int color_manage;
unsigned char col[4];
float colf[4];
int draw;
} ImageSampleInfo;
static void sample_draw(const bContext *C, ARegion *ar, void *arg_info)
{
Scene *scene = CTX_data_scene(C);
ImageSampleInfo *info = arg_info;
if (info->draw) {
ED_image_draw_info(ar, (scene->r.color_mgt_flag & R_COLOR_MANAGEMENT), info->channels,
info->x, info->y, info->col, info->colf,
NULL, NULL /* zbuf - unused for nodes */
);
}
}
static void sample_apply(bContext *C, wmOperator *op, wmEvent *event)
{
SpaceNode *snode = CTX_wm_space_node(C);
ARegion *ar = CTX_wm_region(C);
ImageSampleInfo *info = op->customdata;
void *lock;
Image *ima;
ImBuf *ibuf;
float fx, fy, bufx, bufy;
ima = BKE_image_verify_viewer(IMA_TYPE_COMPOSITE, "Viewer Node");
ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
if (!ibuf) {
info->draw = 0;
return;
}
if (!ibuf->rect) {
if (info->color_manage)
ibuf->profile = IB_PROFILE_LINEAR_RGB;
else
ibuf->profile = IB_PROFILE_NONE;
IMB_rect_from_float(ibuf);
}
/* map the mouse coords to the backdrop image space */
bufx = ibuf->x * snode->zoom;
bufy = ibuf->y * snode->zoom;
fx = (bufx > 0.0f ? ((float)event->mval[0] - 0.5f * ar->winx - snode->xof) / bufx + 0.5f : 0.0f);
fy = (bufy > 0.0f ? ((float)event->mval[1] - 0.5f * ar->winy - snode->yof) / bufy + 0.5f : 0.0f);
if (fx >= 0.0f && fy >= 0.0f && fx < 1.0f && fy < 1.0f) {
float *fp;
char *cp;
int x = (int)(fx * ibuf->x), y = (int)(fy * ibuf->y);
CLAMP(x, 0, ibuf->x - 1);
CLAMP(y, 0, ibuf->y - 1);
info->x = x;
info->y = y;
info->draw = 1;
info->channels = ibuf->channels;
if (ibuf->rect) {
cp = (char *)(ibuf->rect + y * ibuf->x + x);
info->col[0] = cp[0];
info->col[1] = cp[1];
info->col[2] = cp[2];
info->col[3] = cp[3];
info->colf[0] = (float)cp[0] / 255.0f;
info->colf[1] = (float)cp[1] / 255.0f;
info->colf[2] = (float)cp[2] / 255.0f;
info->colf[3] = (float)cp[3] / 255.0f;
}
if (ibuf->rect_float) {
fp = (ibuf->rect_float + (ibuf->channels) * (y * ibuf->x + x));
info->colf[0] = fp[0];
info->colf[1] = fp[1];
info->colf[2] = fp[2];
info->colf[3] = fp[3];
}
ED_node_sample_set(info->colf);
}
else {
info->draw = 0;
ED_node_sample_set(NULL);
}
BKE_image_release_ibuf(ima, lock);
ED_area_tag_redraw(CTX_wm_area(C));
}
static void sample_exit(bContext *C, wmOperator *op)
{
ImageSampleInfo *info = op->customdata;
ED_node_sample_set(NULL);
ED_region_draw_cb_exit(info->art, info->draw_handle);
ED_area_tag_redraw(CTX_wm_area(C));
MEM_freeN(info);
}
static int sample_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
SpaceNode *snode = CTX_wm_space_node(C);
ARegion *ar = CTX_wm_region(C);
ImageSampleInfo *info;
if (snode->treetype != NTREE_COMPOSIT || !(snode->flag & SNODE_BACKDRAW))
return OPERATOR_CANCELLED;
info = MEM_callocN(sizeof(ImageSampleInfo), "ImageSampleInfo");
info->art = ar->type;
info->draw_handle = ED_region_draw_cb_activate(ar->type, sample_draw, info, REGION_DRAW_POST_PIXEL);
op->customdata = info;
sample_apply(C, op, event);
WM_event_add_modal_handler(C, op);
return OPERATOR_RUNNING_MODAL;
}
static int sample_modal(bContext *C, wmOperator *op, wmEvent *event)
{
switch (event->type) {
case LEFTMOUSE:
case RIGHTMOUSE: // XXX hardcoded
sample_exit(C, op);
return OPERATOR_CANCELLED;
case MOUSEMOVE:
sample_apply(C, op, event);
break;
}
return OPERATOR_RUNNING_MODAL;
}
static int sample_cancel(bContext *C, wmOperator *op)
{
sample_exit(C, op);
return OPERATOR_CANCELLED;
}
void NODE_OT_backimage_sample(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Backimage Sample";
ot->idname = "NODE_OT_backimage_sample";
ot->description = "Use mouse to sample background image";
/* api callbacks */
ot->invoke = sample_invoke;
ot->modal = sample_modal;
ot->cancel = sample_cancel;
ot->poll = ED_operator_node_active;
/* flags */
ot->flag = OPTYPE_BLOCKING;
}
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